source3/libsmb/smb2cli_flush.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    smb2 lib
   4    Copyright (C) Volker Lendecke 2011
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "client.h"
  22 #include "async_smb.h"
  23 #include "../libcli/smb/smbXcli_base.h"
  24 #include "smb2cli.h"
  25 #include "libsmb/proto.h"
  26 #include "lib/util/tevent_ntstatus.h"
  27
  28 struct smb2cli_flush_state {
  29         uint8_t fixed[24];
  30 };
  31
  32 static void smb2cli_flush_done(struct tevent_req *subreq);
  33
  34 struct tevent_req *smb2cli_flush_send(TALLOC_CTX *mem_ctx,
  35                                        struct tevent_context *ev,
  36                                        struct smbXcli_conn *conn,
  37                                        uint32_t timeout_msec,
  38                                        struct smbXcli_session *session,
  39                                        uint32_t tcon_id,
  40                                        uint64_t fid_persistent,
  41                                        uint64_t fid_volatile)
  42 {
  43         struct tevent_req *req, *subreq;
  44         struct smb2cli_flush_state *state;
  45         uint8_t *fixed;
  46
  47         req = tevent_req_create(mem_ctx, &state,
  48                                 struct smb2cli_flush_state);
  49         if (req == NULL) {
  50                 return NULL;
  51         }
  52         fixed = state->fixed;
  53         SSVAL(fixed, 0, 24);
  54         SBVAL(fixed, 8, fid_persistent);
  55         SBVAL(fixed, 16, fid_volatile);
  56
  57         subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_FLUSH,
  58                                   0, 0, /* flags */
  59                                   timeout_msec,
  60                                   0xFEFF, /* pid */
  61                                   tcon_id,
  62                                   session,
  63                                   state->fixed, sizeof(state->fixed),
  64                                   NULL, 0);
  65         if (tevent_req_nomem(subreq, req)) {
  66                 return tevent_req_post(req, ev);
  67         }
  68         tevent_req_set_callback(subreq, smb2cli_flush_done, req);
  69         return req;
  70 }
  71
  72 static void smb2cli_flush_done(struct tevent_req *subreq)
  73 {
  74         struct tevent_req *req =
  75                 tevent_req_callback_data(subreq,
  76                 struct tevent_req);
  77         NTSTATUS status;
  78         static const struct smb2cli_req_expected_response expected[] = {
  79         {
  80                 .status = NT_STATUS_OK,
  81                 .body_size = 0x04
  82         }
  83         };
  84
  85         status = smb2cli_req_recv(subreq, NULL, NULL,
  86                                   expected, ARRAY_SIZE(expected));
  87         if (tevent_req_nterror(req, status)) {
  88                 return;
  89         }
  90         tevent_req_done(req);
  91 }
  92
  93 NTSTATUS smb2cli_flush_recv(struct tevent_req *req)
  94 {
  95         return tevent_req_simple_recv_ntstatus(req);
  96 }
  97
  98 NTSTATUS smb2cli_flush(struct smbXcli_conn *conn,
  99                        uint32_t timeout_msec,
 100                        struct smbXcli_session *session,
 101                        uint32_t tcon_id,
 102                        uint64_t fid_persistent,
 103                        uint64_t fid_volatile)
 104 {
 105         TALLOC_CTX *frame = talloc_stackframe();
 106         struct tevent_context *ev;
 107         struct tevent_req *req;
 108         NTSTATUS status = NT_STATUS_NO_MEMORY;
 109
 110         if (smbXcli_conn_has_async_calls(conn)) {
 111                 /*
 112                  * Can't use sync call while an async call is in flight
 113                  */
 114                 status = NT_STATUS_INVALID_PARAMETER;
 115                 goto fail;
 116         }
 117         ev = tevent_context_init(frame);
 118         if (ev == NULL) {
 119                 goto fail;
 120         }
 121         req = smb2cli_flush_send(frame, ev, conn, timeout_msec, session,
 122                                  tcon_id, fid_persistent, fid_volatile);
 123         if (req == NULL) {
 124                 goto fail;
 125         }
 126         if (!tevent_req_poll_ntstatus(req, ev, &status)) {
 127                 goto fail;
 128         }
 129         status = smb2cli_flush_recv(req);
 130  fail:
 131         TALLOC_FREE(frame);
 132         return status;
 133 }